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Finding the Fourth Proportional to 87,114.80, 130,477.80 and 71,562.80

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Solution

The fourth proportional to 87,114.80, 130,477.80 and 71,562.80 is: 107,184.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,114.80 : 130,477.80 = 71,562.80 : x
  2. Step 2: Convert to fraction form
    87,114.80/130,477.80 = 71,562.80/x
  3. Step 3: Cross multiply
    87,114.80x = 130,477.80 × 71,562.80
  4. Step 4: Simplify right side
    87,114.80x = 9,337,356,705.84
  5. Step 5: Solve for x
    x = 9,337,356,705.84/87,114.80
  6. Step 6: Final answer
    x = 107,184.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.